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| author | Davidlohr Bueso <davidlohr.bueso@hp.com> | 2013-04-30 19:15:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-01 08:12:58 -0700 |
| commit | 444d0f621b64716f7868dcbde448e0c66ece4e61 (patch) | |
| tree | 3947e0fe791c53c81d87a929af6d1b8e18a5c6aa /ipc/sem.c | |
| parent | 4d2bff5eb86e8d7b4a20934cccb93bdeebed3558 (diff) | |
| download | op-kernel-dev-444d0f621b64716f7868dcbde448e0c66ece4e61.zip op-kernel-dev-444d0f621b64716f7868dcbde448e0c66ece4e61.tar.gz | |
ipc: introduce lockless pre_down ipcctl
Various forms of ipc use ipcctl_pre_down() to retrieve an ipc object and
check permissions, mostly for IPC_RMID and IPC_SET commands.
Introduce ipcctl_pre_down_nolock(), a lockless version of this function.
The locking version is retained, yet modified to call the nolock version
without affecting its semantics, thus transparent to all ipc callers.
Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Signed-off-by: Rik van Riel <riel@redhat.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Chegu Vinod <chegu_vinod@hp.com>
Cc: Emmanuel Benisty <benisty.e@gmail.com>
Cc: Jason Low <jason.low2@hp.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Stanislav Kinsbursky <skinsbursky@parallels.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/sem.c')
0 files changed, 0 insertions, 0 deletions
